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[Qemu-devel] [PATCH 02/35] ide: Fix ATA command READ to set ATAPI signat


From: Kevin Wolf
Subject: [Qemu-devel] [PATCH 02/35] ide: Fix ATA command READ to set ATAPI signature for CD-ROM
Date: Mon, 12 Sep 2011 16:19:01 +0200

From: Markus Armbruster <address@hidden>

Must set the ATAPI device signature, see ATA4 8.27.5.2 Outputs for
PACKET Command feature set devices, and ACS-2 7.36.6 Outputs for
PACKET feature set devices.

Signed-off-by: Markus Armbruster <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
 hw/ide/core.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/hw/ide/core.c b/hw/ide/core.c
index 1806e00..def0126 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -983,8 +983,10 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
        lba48 = 1;
     case WIN_READ:
     case WIN_READ_ONCE:
-        if (!s->bs)
+        if (s->drive_kind == IDE_CD) {
+            ide_set_signature(s); /* odd, but ATA4 8.27.5.2 requires it */
             goto abort_cmd;
+        }
        ide_cmd_lba48_transform(s, lba48);
         s->req_nb_sectors = 1;
         ide_sector_read(s);
-- 
1.7.6




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